Finding the Third Proportional to 1,299,759 and 2,020,518

Step by Step Solution

1. Step 1: Write the proportion equation
   1,299,759 : 2,020,518 = 2,020,518 : x
2. Step 2: Convert to fraction form
   1,299,759/2,020,518 = 2,020,518/x
3. Step 3: Cross multiply
   1,299,759x = 2,020,518 × 2,020,518
4. Step 4: Simplify right side
   1,299,759x = 4,082,492,988,324
5. Step 5: Solve for x
   x = 4,082,492,988,324/1,299,759
6. Step 6: Final answer
   x = 3,140,961.51